自己用C#写一个采集器、蜘蛛

using System;

using System.Collections.Generic;

using System.Text;

using System.Net;

using System.Web;

using System.IO;

using System.Collections;

using System.Text.RegularExpressions;





namespace chinaz

{

    class Program

    {

        static void Main(string[] args)

        {



            string cookie = null;

            using (StreamReader sr = new StreamReader("cookie.txt"))

            {

                cookie = sr.ReadToEnd();

                sr.Close();

            }

            //string tmp = SRWebClient.GetPage("http://bbs.chinaz.com/Members.html?page=1&sort=CreateDate&desc=true&keyword=", Encoding.UTF8, cookie);

            int a = int.Parse(Console.ReadLine());

            int b = int.Parse(Console.ReadLine());

            string url = Console.ReadLine();



            Hashtable hash = new Hashtable();

            Encoding encoding = Encoding.GetEncoding(Console.ReadLine());



            for (int i = a; i <= b; i++)

            {

                string html = SRWebClient.GetPage(string.Format(url, i), encoding, cookie);

                //Console.WriteLine(html);

                if (html != null && html.Length > 1000)

                {

                    Match m = Regex.Match(html, @"w+([-+.']w+)*@w+([-.]w+)*.w+([-.]w+)*", RegexOptions.Compiled | RegexOptions.IgnoreCase);

                    while (m != null && m.Value != null && m.Value.Trim() != string.Empty)

                    {

                        if (!hash.Contains(m.Value))

                        {

                            Console.WriteLine(m.Value);

                            using (StreamWriter sw = new StreamWriter("mail.txt", true))

                            {

                                sw.WriteLine(m.Value);

                                sw.Close();

                            }

                            hash.Add(m.Value, string.Empty);

                        }

                        m = m.NextMatch();

                    }



                }

            }







            Console.Write("完成");

            Console.ReadLine();

        }

    }





    public class SRWebClient

    {

        public CookieCollection cookie;

        public SRWebClient()

        {

            cookie = null;

        }



        #region 从包含多个 Cookie 的字符串读取到 CookieCollection 集合中

        private static void AddCookieWithCookieHead(ref CookieCollection cookieCol, string cookieHead, string defaultDomain)

        {

            if (cookieCol == null) cookieCol = new CookieCollection();

            if (cookieHead == null) return;

            string[] ary = cookieHead.Split(';');

            for (int i = 0; i < ary.Length; i++)

            {

                Cookie ck = GetCookieFromString(ary[i].Trim(), defaultDomain);

                if (ck != null)

                {

                    cookieCol.Add(ck);

                }

            }

        }

        #endregion



        #region 读取某一个 Cookie 字符串到 Cookie 变量中

        private static Cookie GetCookieFromString(string cookieString, string defaultDomain)

        {

            string[] ary = cookieString.Split(',');

            Hashtable hs = new Hashtable();

            for (int i = 0; i < ary.Length; i++)

            {

                string s = ary[i].Trim();

                int index = s.IndexOf("=");

                if (index > 0)

                {

                    hs.Add(s.Substring(0, index), s.Substring(index + 1));

                }

            }

            Cookie ck = new Cookie();

            foreach (object Key in hs.Keys)

            {

                if (Key.ToString() == "path") ck.Path = hs[Key].ToString();



                else if (Key.ToString() == "expires")

                {

                    //ck.Expires=DateTime.Parse(hs[Key].ToString();

                }

                else if (Key.ToString() == "domain") ck.Domain = hs[Key].ToString();

                else

                {

                    ck.Name = Key.ToString();

                    ck.Value = hs[Key].ToString();

                }

            }

            if (ck.Name == "") return null;

            if (ck.Domain == "") ck.Domain = defaultDomain;

            return ck;

        }

        #endregion







        /**/

        /// <TgData>

        ///     <Alias>下载Web源代码</Alias>

        /// </TgData>

        public string DownloadHtml(string URL, bool CreateCookie)

        {

            try

            {

                HttpWebRequest request = HttpWebRequest.Create(URL) as HttpWebRequest;

                if (cookie != null)

                {

                    request.CookieContainer = new CookieContainer();

                    request.CookieContainer.Add(cookie);

                }

                request.AllowAutoRedirect = false;

                //request.MaximumAutomaticRedirections = 3;

                request.Timeout = 20000;



                HttpWebResponse res = (HttpWebResponse)request.GetResponse();

                string r = "";



                System.IO.StreamReader S1 = new System.IO.StreamReader(res.GetResponseStream(), System.Text.Encoding.Default);

                try

                {

                    r = S1.ReadToEnd();

                    if (CreateCookie)

                        cookie = res.Cookies;

                }

                catch (Exception er)

                {

                    //Log l = new Log();

                    //l.writelog("下载Web错误", er.ToString());

                }

                finally

                {

                    res.Close();

                    S1.Close();

                }



                return r;

            }



            catch

            {



            }



            return string.Empty;

        }



        /**/

        /// <TgData>

        ///     <Alias>下载文件</Alias>

        /// </TgData>

        public long DownloadFile(string FileURL, string FileSavePath, bool CreateCookie)

        {

            long Filelength = 0;

            HttpWebRequest req = HttpWebRequest.Create(FileURL) as HttpWebRequest;



            if (cookie != null)

            {

                req.CookieContainer = new CookieContainer();

                req.CookieContainer.Add(cookie);

            }

            req.AllowAutoRedirect = true;



            HttpWebResponse res = req.GetResponse() as HttpWebResponse;

            if (CreateCookie)

                cookie = res.Cookies;

            System.IO.Stream stream = res.GetResponseStream();

            try

            {

                Filelength = res.ContentLength;



                byte[] b = new byte[512];



                int nReadSize = 0;

                nReadSize = stream.Read(b, 0, 512);



                System.IO.FileStream fs = System.IO.File.Create(FileSavePath);

                try

                {

                    while (nReadSize > 0)

                    {

                        fs.Write(b, 0, nReadSize);

                        nReadSize = stream.Read(b, 0, 512);

                    }

                }

                finally

                {

                    fs.Close();

                }

            }

            catch (Exception er)

            {

                //Log l = new Log();

                //l.writelog("下载文件错误", er.ToString());

            }

            finally

            {

                res.Close();

                stream.Close();

            }



            return Filelength;

        }



        /**/

        /// <TgData>

        ///     <Alias>提交数据</Alias>

        /// </TgData>

        public string Request(string RequestPageURL, RequestData Data, bool CreateCookie)

        {

            StreamReader reader = null;

            HttpWebResponse response = null;

            HttpWebRequest request = null;

            try

            {

                string StrUrl = RequestPageURL;

                request = HttpWebRequest.Create(StrUrl) as HttpWebRequest;



                string postdata = Data.GetData();

                request.Referer = RequestPageURL;

                request.AllowAutoRedirect = false;

                request.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; SV1; Maxthon; .NET CLR 1.1.4322; .NET CLR 2.0.50727)";

                request.Timeout = 20000;



                if (cookie != null)

                {

                    request.CookieContainer = new CookieContainer();

                    request.CookieContainer.Add(cookie);

                }



                Uri u = new Uri(StrUrl);



                if (postdata.Length > 0) //包含要提交的数据 就使用Post方式

                {

                    request.ContentType = "application/x-www-form-urlencoded"; //作为表单请求

                    request.Method = "POST";        //方式就是Post



                    //把提交的数据换成字节数组

                    Byte[] B = System.Text.Encoding.UTF8.GetBytes(postdata);

                    request.ContentLength = B.Length;



                    System.IO.Stream SW = request.GetRequestStream(); //开始提交数据

                    SW.Write(B, 0, B.Length);

                    SW.Close();

                }



                response = request.GetResponse() as HttpWebResponse;

                if (CreateCookie)

                    //cookie = response.Cookies;

                    AddCookieWithCookieHead(ref cookie, response.Headers["Set-Cookie"], request.RequestUri.Host);

                reader = new StreamReader(response.GetResponseStream(), Encoding.Default);



                return reader.ReadToEnd();

            }

            catch (Exception ex)

            {

                string x = ex.StackTrace;

            }

            finally

            {

                if (response != null)

                    response.Close();

            }



            return string.Empty;

        }





        public bool PostDownload(RequestData Data, out string file)

        {

            file = null;

            StreamReader reader = null;

            HttpWebResponse response = null;

            HttpWebRequest request = null;

            try

            {

                string StrUrl = "http://www.imobile.com.cn/wapdiyringdownload.php";

                request = HttpWebRequest.Create(StrUrl) as HttpWebRequest;



                string postdata = Data.GetData();

                request.Referer = StrUrl;

                request.AllowAutoRedirect = false;

                request.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; SV1; Maxthon; .NET CLR 1.1.4322; .NET CLR 2.0.50727)";

                request.Timeout = 20000;



                if (cookie != null)

                {

                    request.CookieContainer = new CookieContainer();

                    request.CookieContainer.Add(cookie);

                }



                Uri u = new Uri(StrUrl);



                if (postdata.Length > 0) //包含要提交的数据 就使用Post方式

                {

                    request.ContentType = "application/x-www-form-urlencoded"; //作为表单请求

                    request.Method = "POST";        //方式就是Post



                    //把提交的数据换成字节数组

                    Byte[] B = System.Text.Encoding.UTF8.GetBytes(postdata);

                    request.ContentLength = B.Length;



                    System.IO.Stream SW = request.GetRequestStream(); //开始提交数据

                    SW.Write(B, 0, B.Length);

                    SW.Close();

                }



                response = request.GetResponse() as HttpWebResponse;

                string des = response.Headers["Content-Disposition"].Trim();

                file = des.Substring(des.IndexOf("filename=") + 9);

                file = new Random().Next(100).ToString() + "/" + file;



                System.IO.Stream stream = response.GetResponseStream();

                try

                {

                    int Filelength = (int)response.ContentLength;



                    byte[] b = new byte[512];



                    int nReadSize = 0;

                    nReadSize = stream.Read(b, 0, 512);



                    System.IO.FileStream fs = System.IO.File.Create("f:/mobileMusic/" + file);

                    try

                    {

                        while (nReadSize > 0)

                        {

                            fs.Write(b, 0, nReadSize);

                            nReadSize = stream.Read(b, 0, 512);

                        }

                    }

                    finally

                    {

                        fs.Close();

                    }

                }

                catch (Exception er)

                {

                    //Log l = new Log();

                    //l.writelog("下载文件错误", er.ToString());

                }

                finally

                {

                    response.Close();

                    stream.Close();

                }

            }

            catch (Exception ex)

            {

                string x = ex.StackTrace;

            }

            finally

            {

                if (response != null)

                    response.Close();

            }

            return true;

        }

        #region GetPage

        /// <summary>

        /// 获取源代码

        /// </summary>

        /// <param name="url"></param>

        /// <param name="coding"></param>

        /// <param name="TryCount"></param>

        /// <returns></returns>

        public static string GetPage(string url, Encoding encoding, int TryCount)

        {

            for (int i = 0; i < TryCount; i++)

            {

                string result = GetPage(url, encoding, null);

                if (result != null && result != string.Empty)

                    return result;

            }



            return string.Empty;

        }



        /// <summary>

        /// 获取源代码

        /// </summary>

        /// <param name="url"></param>

        /// <param name="coding"></param>

        /// <returns></returns>

        public static string GetPage(string url, Encoding encoding, string cookie)

        {

            HttpWebRequest request = null;

            HttpWebResponse response = null;

            StreamReader reader = null;

            try

            {

                request = (HttpWebRequest)WebRequest.Create(url);

                request.UserAgent = "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.2;)";

                request.Timeout = 20000;

                request.AllowAutoRedirect = false;

                if (cookie != null)

                    request.Headers["Cookie"] = cookie;



                response = (HttpWebResponse)request.GetResponse();

                if (response.StatusCode == HttpStatusCode.OK && response.ContentLength < 1024 * 1024)

                {

                    reader = new StreamReader(response.GetResponseStream(), encoding);

                    string html = reader.ReadToEnd();



                    return html;

                }

            }

            catch

            {

            }

            finally

            {



                if (response != null)

                {

                    response.Close();

                    response = null;

                }

                if (reader != null)

                    reader.Close();



                if (request != null)

                    request = null;



            }



            return string.Empty;

        }

        #endregion

    }



    public class RequestData

    {

        Hashtable hash = new Hashtable();



        public RequestData()

        {



        }



        public string GetData()

        {

            string r = "";



            foreach (string key in hash.Keys)

            {

                if (r.Length > 0) r += "&";

                r += key + "=" + hash[key];

            }



            return r;

        }



        public void AddField(string Field, string Value)

        {

            hash[Field] = Value;

        }





    }

}

  

原文地址:https://www.cnblogs.com/feb9903/p/3430762.html